| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.openjpa.persistence.query; |
| |
| import java.util.List; |
| |
| import javax.persistence.EntityManager; |
| |
| import org.apache.openjpa.jdbc.sql.PostgresDictionary; |
| import org.apache.openjpa.persistence.test.SingleEMTestCase; |
| |
| public class TestSubstring extends SingleEMTestCase { |
| |
| @Override |
| public void setUp() { |
| super.setUp(SimpleEntity.class, CLEAR_TABLES, |
| "openjpa.Compatibility", "JPQL=extended"); |
| |
| // Expressions as substring parameters fail on PostgreSQL. |
| // The same problem exists with LOCATE. |
| // Possible fix: use CAST to integer as we do with DB2. |
| if ("testSubstringWithExpressionsInWhere".equals(getName())) { |
| setUnsupportedDatabases(PostgresDictionary.class); |
| if (isTestsDisabled()) { |
| getLog().trace(getName() + |
| " - Skipping test - Expressions as substring parameters fail on PostgreSQL."); |
| return; |
| } |
| } |
| |
| EntityManager em = emf.createEntityManager(); |
| em.getTransaction().begin(); |
| em.persist(new SimpleEntity("foo", "bar")); |
| em.getTransaction().commit(); |
| em.close(); |
| } |
| |
| public void testSingleCharacterSubstringInWhere() { |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 1, 1) = 'b'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 2, 1) = 'a'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 3, 1) = 'r'").getSingleResult()); |
| } |
| |
| public void testMultiCharacterSubstringInWhere() { |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 1, 2) = 'ba'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 2, 2) = 'ar'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 1) = 'bar'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 2) = 'ar'").getSingleResult()); |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 3) = 'r'").getSingleResult()); |
| } |
| |
| public void testSubstringInSelect() { |
| assertEquals("b", em.createQuery("select substring(o.value, 1, 1) " + |
| "from simple o").getSingleResult()); |
| assertEquals("a", em.createQuery("select substring(o.value, 2, 1) " + |
| "from simple o").getSingleResult()); |
| assertEquals("r", em.createQuery("select substring(o.value, 3, 1) " + |
| "from simple o").getSingleResult()); |
| assertEquals("ar", em.createQuery("select substring(o.value, 2) " + |
| "from simple o").getSingleResult()); |
| } |
| |
| public void testSubstringInMemory() { |
| List<SimpleEntity> allEntities = em.createQuery("select o from simple o", SimpleEntity.class).getResultList(); |
| Object inMemoryResult = em.createQuery("select substring(o.value, 1, 1) from simple o") |
| .setCandidateCollection(allEntities).getSingleResult(); |
| assertEquals("b", inMemoryResult); |
| inMemoryResult = em.createQuery("select substring(o.value, 2) from simple o") |
| .setCandidateCollection(allEntities).getSingleResult(); |
| assertEquals("ar", inMemoryResult); |
| } |
| |
| public void testSubstringWithExpressionsInWhere() { |
| assertEquals((long) 1, em.createQuery("select count(o) from simple o " + |
| "where substring(o.value, 1+1, 1+1) = 'ar'").getSingleResult()); |
| } |
| } |